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Fibroadenoma of breast


A fibroadenoma (fy-broe-ad-uh-NO-muh) is a solid breast lump. This breast lump is not cancer. A fibroadenoma happens most often between ages 15 and 35. But it can be found at any age in anyone who has periods.

A fibroadenoma often causes no pain. It can feel firm, smooth and rubbery. It has a round shape. It might feel like a pea in the breast. Or it may feel flat like a coin. When touched, it moves easily within the breast tissue.

Fibroadenomas are common breast lumps. If you have a fibroadenoma, your health care provider may tell you to watch for changes in its size or feel. You may need a biopsy to check the lump or surgery to remove it. Many fibroadenomas need no further treatment.


A fibroadenoma is a solid breast lump that often causes no pain. It is:

  • Round with distinct, smooth borders

  • Easily moved

  • Firm or rubbery

A fibroadenoma often grows slowly. The average size is about 1 inch (2.5 centimeters). A fibroadenoma can get bigger over time. It may be tender or cause soreness a few days before your period. A large fibroadenoma may hurt when you touch it. But most often, this type of breast lump causes no pain.

You can have a single fibroadenoma or more than one fibroadenoma. They can occur in one or both breasts.

Some fibroadenomas shrink over time. Most fibroadenomas in adolescents shrink over many months to a few years. They then disappear. Fibroadenomas may also change shape over time.

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